Records for Quincy Area, Illinois (UINthr) on 09-15
  Record Highs
  
    - 
      1:  100°F (1939)
    
- 
      2:  100°F (1927)
    
- 
      3:  98°F (1931)
    
 
  Record Lows
  
    - 
      1:  37°F (2007)
    
- 
      2:  38°F (2011)
    
- 
      3:  40°F (1961)
    
 
  Lowest Highs
  
    - 
      1:  77°F (1936)
    
- 
      2:  75°F (1920)
    
- 
      3:  74°F (1939)
    
 
  Highest Lows
  
    - 
      1:  55°F (1993)
    
- 
      2:  57°F (1903)
    
- 
      3:  60°F (2008)
    
 
  Highest September temperature:
  
  105°F on 09-04-1913.
  Lowest September temperature:
  
  26°F on 09-28-1942.
  Average temperature is 68.4°F
  Average high is 79.3°F
  Average low is 57.4°F
 
  Temperature data from 1901 to 2022.
  Record Precipitation
  
    - 
      1:  2.83" (1915)
    
- 
      2:  1.49" (1926)
    
- 
      3:  1.47" (1912)
    
 
  Precipitation data from 1901 to 2022.